Seiko Cal. 5661 - 635

This Hand-Winding model from 1970 features a 46mm Titanium case. Powered by the 5661 caliber with 19j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-1e8ff467c398]

Also known as: Samurai, Arnie

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1970

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